class Gem::Resolver::Strategy

Custom PubGrub strategy with caching for version selection. Modeled after Bundler’s strategy to avoid redundant versions_for calls during the solver’s package selection loop.

Public Class Methods

new (source)

# File lib/rubygems/resolver/strategy.rb, line 8
def initialize(source)
  @source = source
  @package_priority_cache = Hash.new {|h, pkg| h[pkg] = {} }

  @version_indexes = Hash.new do |h, k|
    if Gem::PubGrub::Package.root?(k)
      h[k] = { Gem::PubGrub::Package.root_version => 0 }
    else
      h[k] = @source.all_versions_for(k).each.with_index.to_h
    end
  end
end

Public Instance Methods

next_package_and_version (unsatisfied)

# File lib/rubygems/resolver/strategy.rb, line 21
def next_package_and_version(unsatisfied)
  package, range = next_term_to_try_from(unsatisfied)
  [package, most_preferred_version_of(package, range)]
end